SEI Investments
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SEI Investments’s Amtech Systems ASYS Stock Holding History

SEI Investments’s Portfolio ASYS Stock Details ASYS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$1.08M Buy
92,515
+47,282
+105% +$637K ﹤0.01% 2318
2025
Q4 		$568K Buy
+45,233
New +$408K ﹤0.01% 2453

Other funds holding ASYS

First Eagle Investment Management
First Eagle Investment Management New York $59B AUM 32.99% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return
PRCP
Pacific Ridge Capital Partners Lake Oswego, Oregon $462M AUM 40.76% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $185B AUM 39.58% 1-Year Est. Return
Jane Street
Jane Street New York $777B AUM 61.18% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return

SEI Investments's ASYS Position: Q1 2026 in Review

SEI Investments increased its Amtech Systems (ASYS) stake by 105% in Q1 2026, buying an estimated $637K and bringing the position to 92,515 shares worth $1.08M. The position accounts for ﹤0.01% of the portfolio, ranked #2318.

SEI Investments first reported a position in ASYS in Q4 2025 and has held it in 2 quarters since. 79 funds tracked by Wall St. Rank hold ASYS as of Q1 2026.

  • SEI Investments held 92,515 shares of Amtech Systems worth $1.08M as of Q1 2026.
  • SEI Investments bought 47,282 Amtech Systems shares in Q1 2026, an estimated $637K.
  • Amtech Systems made up ﹤0.01% of SEI Investments's portfolio in Q1 2026, its #2318 holding.
  • SEI Investments first reported a position in Amtech Systems in Q4 2025 and has held it in 2 quarters since.
  • 79 funds tracked by Wall St. Rank held Amtech Systems as of Q1 2026.

Based on SEI Investments's 13F filing for Q1 2026, filed 13 May 2026.